3.2. Preparation and characterization of flexible PVC compounds
The compositions of the PVC compounds were tuned around
the samples with variable amount of the liquid selected
plasticizer (DEHP): PVC70% + DEHP30% (R1), PVC60 + DEHP40%
(R2) and PVC55% + DEHP45% (R3) by using a solid sample (SP3)
without applying any purification or modification procedure
as instead often reported for similar products (Shukla et al.,
2008; Kilinç et al., 2005; Soni et al., 2009; More et al., 2014)
(see Table 2).